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by Tarnawsky, Yuriy
by Kharin, Yuriy
by Posudin, Yuriy I.; Massjuk, Nadiya P.; Lilitskaya, Galyna G.
by Kulchik, Yuriy G.; Fadin, Andrey; Sergeev, Victor
by Yuriy I. Dimitrienko
by Aleksandr A. Andriiko; Yuriy O Andriyko; Gerhard E. Nauer
by Jan Awrejcewicz; Yuriy Pyr'yev